Open Radar

 
Summary:
After changing some point of a Swift class (adding a new variable, changing the name to a function or adding a class) the whole Swift project is recompiled.

This is causing a lot of wasted time.

We have reproduced the problem with a clean project, only with 2 classes written in Swift, without relation between them.

Incremental builds are working only if we change something INSIDE a function.
This forum thread is related https://forums.developer.apple.com/thread/62737

Steps to Reproduce:
1. Make a Swift project
2. Add 2 classes.
3. Add 2 vars to the classes.
4. Compile.
5. Change the name of one of the variables.
6. Compile

Expected Results:
The incremental builds should not recompile all the Swift classes that were not changed.

Actual Results:
All the classes are recompiled even if there were no changes

Version:
Version 8.0 (8A218a)

Notes:


Configuration:
Is happening on any machine.
Mine in particular has these configuration:
OS 10.11.6 (15G1004) - 2,8 GHz Intel Core i7 - 16 GB DDR3

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Update from September 1st: this is still happening with Xcode 9 and Swift 4